Vigeleyn, N., A. et al.(1985).Technical english for agricultural education : general reader / A.K.P Vigeleyn Nikijuluw, dkk .Jakarta:.
Gaya MLA
Nikijuluw, A.K.P., Vigeleyn. et al."Technical english for agricultural education : general reader / A.K.P Vigeleyn Nikijuluw, dkk".Jakarta:,1985.Skripsi.